The BC comes with a .584" or .494" tall front sight, the .494" would be the height I would work on, mine came with the .584" which was too tall, shot low with the WGRS at the top of the ramp. I use a .404" 17A sight on my .45-120 BC with the Williams FP sight, it hits 1½" high at 100yds with 405gr bullets at 1500fps with the FP sight at the bottom of its travel. If you want to get those sights, H&R's prices are much better than most retail outlets, the WGRS sold for $18 and the FP $60 last year, their toll free number is in the FAQs and Help sticky.
Tim